Chimney.



E. BANZHAP.

GHIMNEY.

APPLICATION FILED MAR.9, 1011.

Patented Nov. 18, 1913.

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E. BANZHAP.

GHIMNBY.

APPLICATION FILED MAR-9. 1911.

Patented Nov. 18, 1913.

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@9me/Joao 4MM ,wf @W ERNST BANZHAF, OF EASTON, PENNSYLVANIA.

CHIMNEY.

Specification of Letters Patent.

Vatented Nov. 18, 1913.

Application filed March 9, 1911. Serial No. 613,468.

To all whom may concern Be it known that I,` ERNST BANZHAF, a citizen of the United States, residing at Easton, in the county of Northampton, in the State of Pennsylvania, have invented certain new and useful Improvements in Chimneys, of which the following is a speci fication.

The invention relates to improvements in chimneys, which may be constructed of blocks of a plastic material, such as cement, and one of the objects of the invention is to provide a chimney wherein the heat of the smoke and, unconsumed gases may be utilized in warming and Ventilating the rooms of the house or dwelling of which the chimney may form a part.

Another object of the invention is to provide means whereby the chimney may be permitted a sufficient, yet definite, amount of expansion and contraction to prevent cracking or injury.

A further object of the invention is to provide a compact and economical arrangen ment of parts so that the chimney may be easily constructed and quickly and economically assembled.

The various other objects of the invention will be more fully hereinafter set forth in the following description of one form of structure embodying the invention, which consists in the new and novel features ot' construction and combinations of parts hereinafter set forth and claimed.

In the accompanying drawings: Figure l is a side elevation of a chimney embodying my invention. Fig. 2 represents a vertical section of the same on the line 2 2 of Fig. l. Fig. 3 is a sectional view showing the chimney top or capping. Fig. l is a detail view showing the supporting arch for the cap. Fig. 5 is a plan showing a section of the flue and outer wall. Fig. 6 is a fragmental view taken at right angles to Fig. 5 showing a single projection. Fig. 7 is a detail view showing front and side elevations of a ventilator. Fig. 8 is a plan view of a chimney provided with two flues. Fig. 9 is a plan view of a chimney provided with four lues.

The chimney comprises the outer wall or casing, o, and the inner wall or flue, o. The outer wall is usually rectangular in section and comprises a plurality of blocks or sections of any desirable material, such as cement, which are provided with overlapping tongues, c. The flue is preferably circular in section and likewise comprises a plurality of sections of any preferred material, such as cement, which are provided with the overlapping tongues or ribs, (l. At suitable positions, thimbles e of any desired construction pass through the wall and communicate with the flue to receive the smoke pipe from the furnace, stove or other fuel burner. At or near the bottom of the chimney is an opening j', which communicates with the flue to provide means for removing soot and ashes therefrom. rlhis opening is closed in any preferred manner, as by a door g.

In order to provide for the diametric expansion and contraction of the `liuc, certain of the sections of the wall are provided with a plurality of inwardly projecting ribs l1., formed integral therewith. These ribs are so arranged that only a portion thereof as b contact with the flue when the same is in its normal position, but the other projections as 71,2 are so arranged that they will contact with the flue and hold the same against permanent displacement no matter in which direction the expansion or buckling may occur. Preferably the ends of the projections contiguous to the flue are beveled or round so as to correspond with the circumference of the flue. The projections are so arranged that some, of them will be in contact with the flue at any time regardless of its position with relation to the wall of the chimney.

The top of the chimney is provided with an overhanging cap, y', formed from a plurality of rectangular sections secured together' at their meeting edge by a dowel pin or bond, le, in any preferred manner. Two sections arc required for every side or face of the chimney, and the lower section, as Z, rests upon the top of the wall and is provided at or near its upper edge with a plurality of vents or openings, Z. The upper section, m, overlaps the lower section slightly and is provided with a rib m, which lits in a corresponding groove, o, provided in the cap plate 0, which binds the sections together. The cap plate is supported by a baille, plate, y), which forms a chamber, Q, be tween it and the cap walls, l and m.

A continuous air passage, 7', is provided between the flue and the wall of the chimney, from the top to the bottom thereof. Air is admitted to the passage at the bottom of the chimney by one or more openings, s.

The depth of the passage is substantially uniform, except at the top, where the ba'lile plate, y?, is bent inward toward the flue to form a greatly constricted outlet opening 1". rIhe baille plate is also formed with a plurality of openings, p', which provide communication between the chamber, g, and the passage, 1. Y

At any suitable location, preferably near the floor, so that the heated air in the passage, 1", can be utilized to the best advantage in heating rooms or for any other purpose desired, a plurality ot' registers t, are placed in the wall of the chimney. Said ventilators may be of any well known or preferred construction. By means of this construction the air in the interior of the passage, r, becomes heated and is drawn upward not only by the tendency of the heated air to rise, but by the smoke and other gases of combustion passing out oi the flue over the constricted outlet opening of the air passage. This tendency of the heated air to rise in the passage is determined to some extent by the air, which passes into the chamber, g, through the openings, Z, and thence through the openings, p', into the air passage. The air coming in through these openings and up through the air flue r forms an air wall around the gas or smoke rising from the chimney fiue thus preventing the wind from driving the vgas or smoke back down in the flue again.

When the register is suitably positioned. it will serve both as an outlet for the cooler air in the room and as an inlet for supplying the room with the Warmer air from the air passage. It thus acts both as a ventilator and a heater.

By this construction also the diametric expansion and contraction or buckling of the flue is provided for in such manner that neither the wall of the chimney nor the flue itself can be injured thereby.

By the use of my projections I am enabled to use two or more flues in the same chimney; two such tlues being shown in Fig. 8 and four flues in Fig. 9.

It will be noted, also, that many other advantages arevattained by the construction herein set forth, which will be obvious to those skilled in the art, and that various changes in the details of construction may be made without departing from the spirit of the invention, provided the means set forth in the following claim be employed.

I claim as my invention In a chimney, the combination with a tubular flue, of a wall surrounding said flue,

said wall comprising a series of superposed tiers, each tier formed of a plurality of molded blocks having projections extending toward said flue to form separate air passage-ways therewith, certain of said projections contacting with the flue to hold the same in place, and the other projections spaced from said flue to prevent heat conduction from the same.

This speciiication witnessed this of February, A. D., 1911.

ERNST BANZIIAF. Signed in the presence of- W. A. KEMMERER, INM. H. LAWALL.

27 th d ay Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

